Electroluminescent display and process for producing the same

Abstract

An organic electroluminescent display which has excellent partiality, and which includes a substrate, an electrode provided on the substrate, and protrusions provided on the substrate so as to cover the ends of the electrode and convexly curved in section relative to the surface of the substrate. An electroluminescent layer is provided in each opening which is located on the electrode and defined by adjacent protrusions. The electroluminescent layer in its part around the boundary between the electroluminescent layer and the protusion is in contact with the protrusion can be in such a state that the electroluminescent layer is curved in section in a direction opposite to the convexly curved protrusion.

1. an electroluminescent display comprising
 a substrate, 
 an electrode provided on the substrate, 
 protrusions are provided on the substrate so as to cover the ends of the electrode and are convexly curved relatively to the surface of the substrate, 
 an electroluminescent layer provided in each opening which is located on the electrode and defined by adjacent protrusions, 
 wherein the electroluminescent layer in its part around the boundary between the electroluminescent layer and the protrusion is in contact with the protrusion in such a state that the electroluminescent layer is convexly curved in a direction opposite to the convexly curved protrusion, 
 the form of the protrusions comprise a part of an arc and a flat part as an upper part which extends continuously from the part of an arc, and the thickness of the protrusions is not less than 5 μm. 
 
     
     
       2. The electroluminescent display according to  claim 1 , wherein the electroluminescent layer in its part around the boundary between the electroluminescent layer and the protrusion is in smooth and continuous contact with the protrusion. 
     
     
       3. A process for producing an electroluminescent display, comprising the step of
 forming an organic layer including at least an electroluminescent layer on the surface of the substrate with protrusions provided thereon as defined in any one of  claims 1  and  2  by a wet process selected from an ink jet method, a printing method, a casting method, an alternating adsorption method, a spin coating method, a dipping method, and a dispenser method. 
 
     
     
       4. An electronic equipment comprising the display according to any one of  claims 1  and  2  as a display part.